In Python, booleans are a subclass of integers. When you apply the bitwise NOT operator ( ~ ) to a boolean: ~True (which is ~1 ) evaluates to -2 . ~False (which is ~0 ) evaluates to -1 .
Keep an eye on your console for those DeprecationWarnings —they are there to help you stay ahead of the curve!
For most developers, this is rarely the intended result. Usually, someone using ~ on a boolean actually wants the logical NOT ( not True ), which correctly returns False . Because of this common point of confusion, the Python steering committee decided to deprecate bitwise inversion on booleans to encourage clearer coding practices. What’s New in Issue #122982? 122982
If your project currently triggers a DeprecationWarning when using ~ on a boolean, the fix is straightforward. Replace the bitwise operator with the logical not keyword:
This blog post addresses in the CPython repository, which focuses on extending the deprecation warning period for bitwise inversion on boolean types in Python. In Python, booleans are a subclass of integers
It allows more time for the community to discuss if there are specific edge cases where bitwise inversion on bool remains necessary. How to Prepare Your Code
Large codebases and libraries need time to refactor code that might be legacy or automatically generated. Keep an eye on your console for those
is_active = True status = ~is_active # Returns -2, triggers warning Use code with caution. Copied to clipboard is_active = True status = not is_active # Returns False Use code with caution. Copied to clipboard Conclusion